USB 5V 1A 2.1A 18650 Battery Charger Module PCB DIY for Mobile Power Bank

The Dual USB 5V 1A 2.1A 18650 Battery Charger Module PCB is an electronic board designed for creating your own high-performance power bank. This module features two USB output ports (1A and 2.1A), allowing you to charge two mobile devices simultaneously, such as smartphones, tablets, or other USB peripherals. It works with 18650 lithium-ion batteries (not included) and offers multiple built-in protections: overcharge, over-discharge, and overcurrent protection, ensuring safe usage. The charger automatically stops charging the connected device once it is fully charged, preventing any risk of overcharging.

Main Features:

Micro USB Input: 5V 1A

USB Outputs: 5V / 2.1A and 5V / 1A (two USB ports)

Display: Smart digital display showing charging status

Compatible Battery: 18650 Lithium-ion (parallel assembly required)

Dimensions: 57 mm × 28 mm

Integrated Protection: Against overcharge, over-discharge, and overcurrent

Easy to integrate into DIY projects thanks to simple assembly (connect directly to B- and B+ battery terminals, be careful not to reverse the polarity)

Main Application: Custom DIY power banks tailored to specific needs

Fields of Application:

DIY and custom portable battery creation

Charging smartphones, tablets, USB lamps, cameras, mini USB fans, etc.

Educational projects or electronic prototyping requiring reliable mobile power

Emergency backup power for hiking, travel, or off-grid use

Standalone electronic systems powered via USB

Example Projects Requiring This Product:

Custom USB power banks or chargers for mobile phones

Portable charging stations for IoT devices

Emergency power kits for outdoor activities

Portable USB-powered electronic systems